<?php
/*=======================================================================
 // File:        JPGRAPH_PIE.PHP
 // Description: Pie plot extension for JpGraph
 // Created:     2001-02-14
 // Ver:         $Id: jpgraph_pie.php 1926 2010-01-11 16:33:07Z ljp $
 //
 // Copyright (c) Asial Corporation. All rights reserved.
 //========================================================================
 */


// Defines for PiePlot::SetLabelType()
define("PIE_VALUE_ABS",1);
define("PIE_VALUE_PER",0);
define("PIE_VALUE_PERCENTAGE",0);
define("PIE_VALUE_ADJPERCENTAGE",2);
define("PIE_VALUE_ADJPER",2);

//===================================================
// CLASS PiePlot
// Description: Draws a pie plot
//===================================================
class PiePlot {
	public $posx=0.5,$posy=0.5;
	public $is_using_plot_theme = false;
	public $theme="earth";
	protected $use_plot_theme_colors = false;
	protected $radius=0.3;
	protected $explode_radius=array(),$explode_all=false,$explode_r=20;
	protected $labels=null, $legends=null;
	protected $csimtargets=null,$csimwintargets=null;  // Array of targets for CSIM
	protected $csimareas='';  // Generated CSIM text
	protected $csimalts=null;  // ALT tags for corresponding target
	protected $data=null;
	public $title;
	protected $startangle=0;
	protected $weight=1, $color="black";
	protected $legend_margin=6,$show_labels=true;
	protected $themearr = array(
 "earth"  => array(136,34,40,45,46,62,63,134,74,10,120,136,141,168,180,77,209,218,346,395,89,430),
 "pastel" => array(27,415,128,59,66,79,105,110,42,147,152,230,236,240,331,337,405,38),
 "water"  => array(8,370,24,40,335,56,213,237,268,14,326,387,10,388),
 "sand"   => array(27,168,34,170,19,50,65,72,131,209,46,393));
	protected $setslicecolors=array();
	protected $labeltype=0; // Default to percentage
	protected $pie_border=true,$pie_interior_border=true;
	public $value;
	protected $ishadowcolor='',$ishadowdrop=4;
	protected $ilabelposadj=1;
	protected $legendcsimtargets = array(),$legendcsimwintargets = array();
	protected $legendcsimalts = array();
	protected $adjusted_data = array();
	public $guideline = null;
	protected $guidelinemargin=10,$iShowGuideLineForSingle = false;
	protected $iGuideLineCurve = false,$iGuideVFactor=1.4,$iGuideLineRFactor=0.8;
	protected $la = array(); // Holds the exact angle for each label

	//---------------
	// CONSTRUCTOR
	function __construct($data) {
		$this->data = array_reverse($data);
		$this->title = new Text("");
		$this->title->SetFont(FF_DEFAULT,FS_BOLD);
		$this->value = new DisplayValue();
		$this->value->Show();
		$this->value->SetFormat('%.1f%%');
		$this->guideline = new LineProperty();
	}

	//---------------
	// PUBLIC METHODS
	function SetCenter($x,$y=0.5) {
		$this->posx = $x;
		$this->posy = $y;
	}

	// Enable guideline and set drwaing policy
	function SetGuideLines($aFlg=true,$aCurved=true,$aAlways=false) {
		$this->guideline->Show($aFlg);
		$this->iShowGuideLineForSingle = $aAlways;
		$this->iGuideLineCurve = $aCurved;
	}

	// Adjuste the distance between labels and labels and pie
	function SetGuideLinesAdjust($aVFactor,$aRFactor=0.8) {
		$this->iGuideVFactor=$aVFactor;
		$this->iGuideLineRFactor=$aRFactor;
	}

	function SetColor($aColor) {
		$this->color = $aColor;
	}

	function SetSliceColors($aColors) {
		$this->setslicecolors = $aColors;
	}

	function SetShadow($aColor='darkgray',$aDropWidth=4) {
		$this->ishadowcolor = $aColor;
		$this->ishadowdrop = $aDropWidth;
	}

	function SetCSIMTargets($aTargets,$aAlts='',$aWinTargets='') {
		$this->csimtargets=array_reverse($aTargets);
		if( is_array($aWinTargets) )
		$this->csimwintargets=array_reverse($aWinTargets);
		if( is_array($aAlts) )
		$this->csimalts=array_reverse($aAlts);
	}

	function GetCSIMareas() {
		return $this->csimareas;
	}

	function AddSliceToCSIM($i,$xc,$yc,$radius,$sa,$ea) {
		//Slice number, ellipse centre (x,y), height, width, start angle, end angle
		while( $sa > 2*M_PI ) $sa = $sa - 2*M_PI;
		while( $ea > 2*M_PI ) $ea = $ea - 2*M_PI;

		$sa = 2*M_PI - $sa;
		$ea = 2*M_PI - $ea;

		// Special case when we have only one slice since then both start and end
		// angle will be == 0
		if( abs($sa - $ea) < 0.0001 ) {
			$sa=2*M_PI; $ea=0;
		}

		//add coordinates of the centre to the map
		$xc = floor($xc);$yc=floor($yc);
		$coords = "$xc, $yc";

		//add coordinates of the first point on the arc to the map
		$xp = floor(($radius*cos($ea))+$xc);
		$yp = floor($yc-$radius*sin($ea));
		$coords.= ", $xp, $yp";

		//add coordinates every 0.2 radians
		$a=$ea+0.2;

		// If we cross the 360-limit with a slice we need to handle
		// the fact that end angle is smaller than start
		if( $sa < $ea ) {
			while ($a <= 2*M_PI) {
				$xp = floor($radius*cos($a)+$xc);
				$yp = floor($yc-$radius*sin($a));
				$coords.= ", $xp, $yp";
				$a += 0.2;
			}
			$a -= 2*M_PI;
		}


		while ($a < $sa) {
			$xp = floor($radius*cos($a)+$xc);
			$yp = floor($yc-$radius*sin($a));
			$coords.= ", $xp, $yp";
			$a += 0.2;
		}

		//Add the last point on the arc
		$xp = floor($radius*cos($sa)+$xc);
		$yp = floor($yc-$radius*sin($sa));
		$coords.= ", $xp, $yp";
		if( !empty($this->csimtargets[$i]) ) {
			$this->csimareas .= "<area shape=\"poly\" coords=\"$coords\" href=\"".$this->csimtargets[$i]."\"";
			$tmp="";
			if( !empty($this->csimwintargets[$i]) ) {
				$this->csimareas .= " target=\"".$this->csimwintargets[$i]."\" ";
			}
			if( !empty($this->csimalts[$i]) ) {
				$tmp=sprintf($this->csimalts[$i],$this->data[$i]);
				$this->csimareas .= " title=\"$tmp\" alt=\"$tmp\" ";
			}
			$this->csimareas .= " />\n";
		}
	}


	function SetTheme($aTheme) {
		//        JpGraphError::RaiseL(15012,$aTheme);
		//        return;

		if( in_array($aTheme,array_keys($this->themearr)) ) {
			$this->theme = $aTheme;
			$this->is_using_plot_theme = true;
		} else {
			JpGraphError::RaiseL(15001,$aTheme);//("PiePLot::SetTheme() Unknown theme: $aTheme");
		}
	}

	function ExplodeSlice($e,$radius=20) {
		if( ! is_integer($e) )
		JpGraphError::RaiseL(15002);//('Argument to PiePlot::ExplodeSlice() must be an integer');
		$this->explode_radius[$e]=$radius;
	}

	function ExplodeAll($radius=20) {
		$this->explode_all=true;
		$this->explode_r = $radius;
	}

	function Explode($aExplodeArr) {
		if( !is_array($aExplodeArr) ) {
			JpGraphError::RaiseL(15003);
			//("Argument to PiePlot::Explode() must be an array with integer distances.");
		}
		$this->explode_radius = $aExplodeArr;
	}

	function SetStartAngle($aStart) {
		if( $aStart < 0 || $aStart > 360 ) {
			JpGraphError::RaiseL(15004);//('Slice start angle must be between 0 and 360 degrees.');
		}
		if( $aStart == 0 ) {
			$this->startangle = 0;
		}
		else {
			$this->startangle = 360-$aStart;
			$this->startangle *= M_PI/180;
		}
	}

	// Size in percentage
	function SetSize($aSize) {
		if( ($aSize>0 && $aSize<=0.5) || ($aSize>10 && $aSize<1000) )
		$this->radius = $aSize;
		else
		JpGraphError::RaiseL(15006);
		//("PiePlot::SetSize() Radius for pie must either be specified as a fraction [0, 0.5] of the size of the image or as an absolute size in pixels  in the range [10, 1000]");
	}

	// Set label arrays
	function SetLegends($aLegend) {
		$this->legends = $aLegend;
	}

	// Set text labels for slices
	function SetLabels($aLabels,$aLblPosAdj="auto") {
		$this->labels = array_reverse($aLabels);
		$this->ilabelposadj=$aLblPosAdj;
	}

	function SetLabelPos($aLblPosAdj) {
		$this->ilabelposadj=$aLblPosAdj;
	}

	// Should we display actual value or percentage?
	function SetLabelType($aType) {
		if( $aType < 0 || $aType > 2 )
		JpGraphError::RaiseL(15008,$aType);
		//("PiePlot::SetLabelType() Type for pie plots must be 0 or 1 (not $t).");
		$this->labeltype = $aType;
	}

	// Deprecated.
	function SetValueType($aType) {
		$this->SetLabelType($aType);
	}

	// Should the circle around a pie plot be displayed
	function ShowBorder($exterior=true,$interior=true) {
		$this->pie_border = $exterior;
		$this->pie_interior_border = $interior;
	}

	// Setup the legends
	function Legend($graph) {
		$colors = array_keys($graph->img->rgb->rgb_table);
		sort($colors);
		$ta=$this->themearr[$this->theme];
		$n = count($this->data);

		if( $this->setslicecolors==null ) {
			$numcolors=count($ta);
			if( class_exists('PiePlot3D',false) && ($this instanceof PiePlot3D) ) {
				$ta = array_reverse(array_slice($ta,0,$n));
			}
		}
		else {
			$this->setslicecolors = array_slice($this->setslicecolors,0,$n);
			$numcolors=count($this->setslicecolors);
			if( $graph->pieaa && !($this instanceof PiePlot3D) ) {
				$this->setslicecolors = array_reverse($this->setslicecolors);
			}
		}

		$sum=0;
		for($i=0; $i < $n; ++$i)
		$sum += $this->data[$i];

		// Bail out with error if the sum is 0
		if( $sum==0 )
		JpGraphError::RaiseL(15009);//("Illegal pie plot. Sum of all data is zero for Pie!");

		// Make sure we don't plot more values than data points
		// (in case the user added more legends than data points)
		$n = min(count($this->legends),count($this->data));
		if( $this->legends != "" ) {
			$this->legends = array_reverse(array_slice($this->legends,0,$n));
		}
		for( $i=$n-1; $i >= 0; --$i ) {
			$l = $this->legends[$i];
			// Replace possible format with actual values
			if( count($this->csimalts) > $i ) {
				$fmt = $this->csimalts[$i];
			}
			else {
				$fmt = "%d"; // Deafult Alt if no other has been specified
			}
			if( $this->labeltype==0 ) {
				$l = sprintf($l,100*$this->data[$i]/$sum);
				$alt = sprintf($fmt,$this->data[$i]);

			}
			elseif( $this->labeltype == 1)  {
				$l = sprintf($l,$this->data[$i]);
				$alt = sprintf($fmt,$this->data[$i]);

			}
			else {
				$l = sprintf($l,$this->adjusted_data[$i]);
				$alt = sprintf($fmt,$this->adjusted_data[$i]);
			}

			if( empty($this->csimwintargets[$i]) ) {
				$wintarg = '';
			}
			else {
				$wintarg = $this->csimwintargets[$i];
			}

			if( $this->setslicecolors==null ) {
				$graph->legend->Add($l,$colors[$ta[$i%$numcolors]],"",0,$this->csimtargets[$i],$alt,$wintarg);
			}
			else {
				$graph->legend->Add($l,$this->setslicecolors[$i%$numcolors],"",0,$this->csimtargets[$i],$alt,$wintarg);
			}
		}
	}

	// Adjust the rounded percetage value so that the sum of
	// of the pie slices are always 100%
	// Using the Hare/Niemeyer method
	function AdjPercentage($aData,$aPrec=0) {
		$mul=100;
		if( $aPrec > 0 && $aPrec < 3 ) {
			if( $aPrec == 1 )
			$mul=1000;
			else
			$mul=10000;
		}

		$tmp = array();
		$result = array();
		$quote_sum=0;
		$n = count($aData) ;
		for( $i=0, $sum=0; $i < $n; ++$i )
		$sum+=$aData[$i];
		foreach($aData as $index => $value) {
			$tmp_percentage=$value/$sum*$mul;
			$result[$index]=floor($tmp_percentage);
			$tmp[$index]=$tmp_percentage-$result[$index];
			$quote_sum+=$result[$index];
		}
		if( $quote_sum == $mul) {
			if( $mul > 100 ) {
				$tmp = $mul / 100;
				for( $i=0; $i < $n; ++$i ) {
					$result[$i] /= $tmp ;
				}
			}
			return $result;
		}
		arsort($tmp,SORT_NUMERIC);
		reset($tmp);
		for($i=0; $i < $mul-$quote_sum; $i++)
		{
			$result[key($tmp)]++;
			next($tmp);
		}
		if( $mul > 100 ) {
			$tmp = $mul / 100;
			for( $i=0; $i < $n; ++$i ) {
				$result[$i] /= $tmp ;
			}
		}
		return $result;
	}


	function Stroke($img,$aaoption=0) {
		// aaoption is used to handle antialias
		// aaoption == 0 a normal pie
		// aaoption == 1 just the body
		// aaoption == 2 just the values

		// Explode scaling. If anti alias we scale the image
		// twice and we also need to scale the exploding distance
		$expscale = $aaoption === 1 ? 2 : 1;

		if( $this->labeltype == 2 ) {
			// Adjust the data so that it will add up to 100%
			$this->adjusted_data = $this->AdjPercentage($this->data);
		}

		if ($this->use_plot_theme_colors) {
			$this->setslicecolors = null;
		}

		$colors = array_keys($img->rgb->rgb_table);
		sort($colors);
		$ta=$this->themearr[$this->theme];
		$n = count($this->data);

		if( $this->setslicecolors==null ) {
			$numcolors=count($ta);
		}
		else {
			// We need to create an array of colors as long as the data
			// since we need to reverse it to get the colors in the right order
			$numcolors=count($this->setslicecolors);
			$i = 2*$numcolors;
			while( $n > $i ) {
				$this->setslicecolors = array_merge($this->setslicecolors,$this->setslicecolors);
				$i += $n;
			}
			$tt = array_slice($this->setslicecolors,0,$n % $numcolors);
			$this->setslicecolors = array_merge($this->setslicecolors,$tt);
			$this->setslicecolors = array_reverse($this->setslicecolors);
		}

		// Draw the slices
		$sum=0;
		for($i=0; $i < $n; ++$i)
		$sum += $this->data[$i];

		// Bail out with error if the sum is 0
		if( $sum==0 ) {
			JpGraphError::RaiseL(15009);//("Sum of all data is 0 for Pie.");
		}

		// Set up the pie-circle
		if( $this->radius <= 1 ) {
			$radius = floor($this->radius*min($img->width,$img->height));
		}
		else {
			$radius = $aaoption === 1 ? $this->radius*2 : $this->radius;
		}

		if( $this->posx <= 1 && $this->posx > 0 ) {
			$xc = round($this->posx*$img->width);
		}
		else {
			$xc = $this->posx ;
		}

		if( $this->posy <= 1 && $this->posy > 0 ) {
			$yc = round($this->posy*$img->height);
		}
		else {
			$yc = $this->posy ;
		}

		$n = count($this->data);

		if( $this->explode_all ) {
			for($i=0; $i < $n; ++$i) {
				$this->explode_radius[$i]=$this->explode_r;
			}
		}

		// If we have a shadow and not just drawing the labels
		if( $this->ishadowcolor != "" && $aaoption !== 2) {
			$accsum=0;
			$angle2 = $this->startangle;
			$img->SetColor($this->ishadowcolor);
			for($i=0; $sum > 0 && $i < $n; ++$i) {
				$j = $n-$i-1;
				$d = $this->data[$i];
				$angle1 = $angle2;
				$accsum += $d;
				$angle2 = $this->startangle+2*M_PI*$accsum/$sum;
				if( empty($this->explode_radius[$j]) ) {
					$this->explode_radius[$j]=0;
				}

				if( $d < 0.00001 ) continue;

				$la = 2*M_PI - (abs($angle2-$angle1)/2.0+$angle1);

				$xcm = $xc + $this->explode_radius[$j]*cos($la)*$expscale;
				$ycm = $yc - $this->explode_radius[$j]*sin($la)*$expscale;

				$xcm += $this->ishadowdrop*$expscale;
				$ycm += $this->ishadowdrop*$expscale;

				$_sa = round($angle1*180/M_PI);
				$_ea = round($angle2*180/M_PI);

				// The CakeSlice method draws a full circle in case of start angle = end angle
				// for pie slices we don't want this behaviour unless we only have one
				// slice in the pie in case it is the wanted behaviour
				if( $_ea-$_sa > 0.1 || $n==1 ) {
					$img->CakeSlice($xcm,$ycm,$radius-1,$radius-1,
					$angle1*180/M_PI,$angle2*180/M_PI,$this->ishadowcolor);
				}
			}
		}

		//--------------------------------------------------------------------------------
		// This is the main loop to draw each cake slice
		//--------------------------------------------------------------------------------

		// Set up the accumulated sum, start angle for first slice and border color
		$accsum=0;
		$angle2 = $this->startangle;
		$img->SetColor($this->color);

		// Loop though all the slices if there is a pie to draw (sum>0)
		// There are n slices in total
		for($i=0; $sum>0 && $i < $n; ++$i) {

			// $j is the actual index used for the slice
			$j = $n-$i-1;

			// Make sure we havea  valid distance to explode the slice
			if( empty($this->explode_radius[$j]) ) {
				$this->explode_radius[$j]=0;
			}

			// The actual numeric value for the slice
			$d = $this->data[$i];

			$angle1 = $angle2;

			// Accumlate the sum
			$accsum += $d;

			// The new angle when we add the "size" of this slice
			// angle1 is then the start and angle2 the end of this slice
			$angle2 = $this->NormAngle($this->startangle+2*M_PI*$accsum/$sum);

			// We avoid some trouble by not allowing end angle to be 0, in that case
			// we translate to 360

			// la is used to hold the label angle, which is centered on the slice
			if( $angle2 < 0.0001 && $angle1 > 0.0001 ) {
				$this->la[$i] = 2*M_PI - (abs(2*M_PI-$angle1)/2.0+$angle1);
			}
			elseif( $angle1 > $angle2 ) {
				// The case where the slice crosses the 3 a'clock line
				// Remember that the slices are counted clockwise and
				// labels are counted counter clockwise so we need to revert with 2 PI
				$this->la[$i] = 2*M_PI-$this->NormAngle($angle1 + ((2*M_PI - $angle1)+$angle2)/2);
			}
			else {
				$this->la[$i] = 2*M_PI - (abs($angle2-$angle1)/2.0+$angle1);
			}

			// Too avoid rounding problems we skip the slice if it is too small
			if( $d < 0.00001 ) continue;

			// If the user has specified an array of colors for each slice then use
			// that a color otherwise use the theme array (ta) of colors
			if( $this->setslicecolors==null ) {
				$slicecolor=$colors[$ta[$i%$numcolors]];
			}
			else {
				$slicecolor=$this->setslicecolors[$i%$numcolors];
			}

			//            $_sa = round($angle1*180/M_PI);
			//            $_ea = round($angle2*180/M_PI);
			//            $_la = round($this->la[$i]*180/M_PI);
			//            echo "Slice#$i: ang1=$_sa , ang2=$_ea, la=$_la, color=$slicecolor<br>";


			// If we have enabled antialias then we don't draw any border so
			// make the bordedr color the same as the slice color
			if( $this->pie_interior_border && $aaoption===0 ) {
				$img->SetColor($this->color);
			}
			else {
				$img->SetColor($slicecolor);
			}
			$arccolor = $this->pie_border && $aaoption===0 ? $this->color : "";

			// Calculate the x,y coordinates for the base of this slice taking
			// the exploded distance into account. Here we use the mid angle as the
			// ray of extension and we have the mid angle handy as it is also the
			// label angle
			$xcm = $xc + $this->explode_radius[$j]*cos($this->la[$i])*$expscale;
			$ycm = $yc - $this->explode_radius[$j]*sin($this->la[$i])*$expscale;

			// If we are not just drawing the labels then draw this cake slice
			if( $aaoption !== 2 ) {

				$_sa = round($angle1*180/M_PI);
				$_ea = round($angle2*180/M_PI);
				$_la = round($this->la[$i]*180/M_PI);
				//echo "[$i] sa=$_sa, ea=$_ea, la[$i]=$_la, (color=$slicecolor)<br>";

				// The CakeSlice method draws a full circle in case of start angle = end angle
				// for pie slices we want this in case the slice have a value larger than 99% of the
				// total sum
				if( abs($_ea-$_sa) >= 1 || $d == $sum ) {
					$img->CakeSlice($xcm,$ycm,$radius-1,$radius-1,$_sa,$_ea,$slicecolor,$arccolor);
				}
			}

			// If the CSIM is used then make sure we register a CSIM area for this slice as well
			if( $this->csimtargets && $aaoption !== 1 ) {
				$this->AddSliceToCSIM($i,$xcm,$ycm,$radius,$angle1,$angle2);
			}
		}

		// Format the titles for each slice
		if( $aaoption !== 2 ) {
			for( $i=0; $i < $n; ++$i) {
				if( $this->labeltype==0 ) {
					if( $sum != 0 )
					$l = 100.0*$this->data[$i]/$sum;
					else
					$l = 0.0;
				}
				elseif( $this->labeltype==1 ) {
					$l = $this->data[$i]*1.0;
				}
				else {
					$l = $this->adjusted_data[$i];
				}
				if( isset($this->labels[$i]) && is_string($this->labels[$i]) )
				$this->labels[$i]=sprintf($this->labels[$i],$l);
				else
				$this->labels[$i]=$l;
			}
		}

		if( $this->value->show && $aaoption !== 1 ) {
			$this->StrokeAllLabels($img,$xc,$yc,$radius);
		}

		// Adjust title position
		if( $aaoption !== 1 ) {
			$this->title->SetPos($xc,
			$yc-$this->title->GetFontHeight($img)-$radius-$this->title->margin,
     "center","bottom");
			$this->title->Stroke($img);
		}

	}

	//---------------
	// PRIVATE METHODS

	function NormAngle($a) {
		while( $a < 0 ) $a += 2*M_PI;
		while( $a > 2*M_PI ) $a -= 2*M_PI;
		return $a;
	}

	function Quadrant($a) {
		$a=$this->NormAngle($a);
		if( $a > 0 && $a <= M_PI/2 )
		return 0;
		if( $a > M_PI/2 && $a <= M_PI )
		return 1;
		if( $a > M_PI && $a <= 1.5*M_PI )
		return 2;
		if( $a > 1.5*M_PI )
		return 3;
	}

	function StrokeGuideLabels($img,$xc,$yc,$radius) {
		$n = count($this->labels);

		//-----------------------------------------------------------------------
		// Step 1 of the algorithm is to construct a number of clusters
		// a cluster is defined as all slices within the same quadrant (almost)
		// that has an angular distance less than the treshold
		//-----------------------------------------------------------------------
		$tresh_hold=25 * M_PI/180; // 25 degrees difference to be in a cluster
		$incluster=false; // flag if we are currently in a cluster or not
		$clusters = array(); // array of clusters
		$cidx=-1;  // running cluster index

		// Go through all the labels and construct a number of clusters
		for($i=0; $i < $n-1; ++$i) {
			// Calc the angle distance between two consecutive slices
			$a1=$this->la[$i];
			$a2=$this->la[$i+1];
			$q1 = $this->Quadrant($a1);
			$q2 = $this->Quadrant($a2);
			$diff = abs($a1-$a2);
			if( $diff < $tresh_hold ) {
				if( $incluster ) {
					$clusters[$cidx][1]++;
					// Each cluster can only cover one quadrant
					// Do we cross a quadrant ( and must break the cluster)
					if( $q1 !=  $q2 ) {
						// If we cross a quadrant boundary we normally start a
						// new cluster. However we need to take the 12'a clock
						// and 6'a clock positions into a special consideration.
						// Case 1: WE go from q=1 to q=2 if the last slice on
						// the cluster for q=1 is close to 12'a clock and the
						// first slice in q=0 is small we extend the previous
						// cluster
						if( $q1 == 1 && $q2 == 0 && $a2 > (90-15)*M_PI/180 ) {
							if( $i < $n-2 ) {
								$a3 = $this->la[$i+2];
								// If there isn't a cluster coming up with the next-next slice
								// we extend the previous cluster to cover this slice as well
								if( abs($a3-$a2) >= $tresh_hold ) {
									$clusters[$cidx][1]++;
									$i++;
								}
							}
						}
						elseif( $q1 == 3 && $q2 == 2 && $a2 > (270-15)*M_PI/180 ) {
							if( $i < $n-2 ) {
								$a3 = $this->la[$i+2];
								// If there isn't a cluster coming up with the next-next slice
								// we extend the previous cluster to cover this slice as well
								if( abs($a3-$a2) >= $tresh_hold ) {
									$clusters[$cidx][1]++;
									$i++;
								}
							}
						}

						if( $q1==2 && $q2==1 && $a2 > (180-15)*M_PI/180 ) {
							$clusters[$cidx][1]++;
							$i++;
						}

						$incluster = false;
					}
				}
				elseif( $q1 == $q2)  {
					$incluster = true;
					// Now we have a special case for quadrant 0. If we previously
					// have a cluster of one in quadrant 0 we just extend that
					// cluster. If we don't do this then we risk that the label
					// for the cluster of one will cross the guide-line
					if( $q1 == 0 && $cidx > -1 &&
					$clusters[$cidx][1] == 1 &&
					$this->Quadrant($this->la[$clusters[$cidx][0]]) == 0 ) {
						$clusters[$cidx][1]++;
					}
					else {
						$cidx++;
						$clusters[$cidx][0] = $i;
						$clusters[$cidx][1] = 1;
					}
				}
				else {
					// Create a "cluster" of one since we are just crossing
					// a quadrant
					$cidx++;
					$clusters[$cidx][0] = $i;
					$clusters[$cidx][1] = 1;
				}
			}
			else {
				if( $incluster ) {
					// Add the last slice
					$clusters[$cidx][1]++;
					$incluster = false;
				}
				else { // Create a "cluster" of one
					$cidx++;
					$clusters[$cidx][0] = $i;
					$clusters[$cidx][1] = 1;
				}
			}
		}
		// Handle the very last slice
		if( $incluster ) {
			$clusters[$cidx][1]++;
		}
		else { // Create a "cluster" of one
			$cidx++;
			$clusters[$cidx][0] = $i;
			$clusters[$cidx][1] = 1;
		}

		/*
		 if( true ) {
		 // Debug printout in labels
		 for( $i=0; $i <= $cidx; ++$i ) {
		 for( $j=0; $j < $clusters[$i][1]; ++$j ) {
		 $a = $this->la[$clusters[$i][0]+$j];
		 $aa = round($a*180/M_PI);
		 $q = $this->Quadrant($a);
		 $this->labels[$clusters[$i][0]+$j]="[$q:$aa] $i:$j";
		 }
		 }
		 }
		 */

		//-----------------------------------------------------------------------
		// Step 2 of the algorithm is use the clusters and draw the labels
		// and guidelines
		//-----------------------------------------------------------------------

		// We use the font height as the base factor for how far we need to
		// spread the labels in the Y-direction.
		$this->value->ApplyFont($img);
		$fh = $img->GetFontHeight();
		$origvstep=$fh*$this->iGuideVFactor;
		$this->value->SetMargin(0);

		// Number of clusters found
		$nc = count($clusters);

		// Walk through all the clusters
		for($i=0; $i < $nc; ++$i) {

			// Start angle and number of slices in this cluster
			$csize = $clusters[$i][1];
			$a = $this->la[$clusters[$i][0]];
			$q = $this->Quadrant($a);

			// Now set up the start and end conditions to make sure that
			// in each cluster we walk through the all the slices starting with the slice
			// closest to the equator. Since all slices are numbered clockwise from "3'a clock"
			// we have different conditions depending on in which quadrant the slice lies within.
			if( $q == 0 ) {
				$start = $csize-1; $idx = $start; $step = -1; $vstep = -$origvstep;
			}
			elseif( $q == 1 ) {
				$start = 0; $idx = $start; $step = 1; $vstep = -$origvstep;
			}
			elseif( $q == 2 ) {
				$start = $csize-1; $idx = $start; $step = -1; $vstep = $origvstep;
			}
			elseif( $q == 3 ) {
				$start = 0; $idx = $start; $step = 1; $vstep = $origvstep;
			}

			// Walk through all slices within this cluster
			for($j=0; $j < $csize; ++$j) {
				// Now adjust the position of the labels in each cluster starting
				// with the slice that is closest to the equator of the pie
				$a = $this->la[$clusters[$i][0]+$idx];

				// Guide line start in the center of the arc of the slice
				$r = $radius+$this->explode_radius[$n-1-($clusters[$i][0]+$idx)];
				$x = round($r*cos($a)+$xc);
				$y = round($yc-$r*sin($a));

				// The distance from the arc depends on chosen font and the "R-Factor"
				$r += $fh*$this->iGuideLineRFactor;

				// Should the labels be placed curved along the pie or in straight columns
				// outside the pie?
				if( $this->iGuideLineCurve )
				$xt=round($r*cos($a)+$xc);

				// If this is the first slice in the cluster we need some first time
				// proessing
				if( $idx == $start ) {
					if( ! $this->iGuideLineCurve )
					$xt=round($r*cos($a)+$xc);
					$yt=round($yc-$r*sin($a));

					// Some special consideration in case this cluster starts
					// in quadrant 1 or 3 very close to the "equator" (< 20 degrees)
					// and the previous clusters last slice is within the tolerance.
					// In that case we add a font height to this labels Y-position
					// so it doesn't collide with
					// the slice in the previous cluster
					$prevcluster = ($i + ($nc-1) ) % $nc;
					$previdx=$clusters[$prevcluster][0]+$clusters[$prevcluster][1]-1;
					if( $q == 1 && $a > 160*M_PI/180 ) {
						// Get the angle for the previous clusters last slice
						$diff = abs($a-$this->la[$previdx]);
						if( $diff < $tresh_hold ) {
							$yt -= $fh;
						}
					}
					elseif( $q == 3 && $a > 340*M_PI/180 ) {
						// We need to subtract 360 to compare angle distance between
						// q=0 and q=3
						$diff = abs($a-$this->la[$previdx]-360*M_PI/180);
						if( $diff < $tresh_hold ) {
							$yt += $fh;
						}
					}

				}
				else {
					// The step is at minimum $vstep but if the slices are relatively large
					// we make sure that we add at least a step that corresponds to the vertical
					// distance between the centers at the arc on the slice
					$prev_a = $this->la[$clusters[$i][0]+($idx-$step)];
					$dy = abs($radius*(sin($a)-sin($prev_a))*1.2);
					if( $vstep > 0 )
					$yt += max($vstep,$dy);
					else
					$yt += min($vstep,-$dy);
				}

				$label = $this->labels[$clusters[$i][0]+$idx];

				if( $csize == 1 ) {
					// A "meta" cluster with only one slice
					$r = $radius+$this->explode_radius[$n-1-($clusters[$i][0]+$idx)];
					$rr = $r+$img->GetFontHeight()/2;
					$xt=round($rr*cos($a)+$xc);
					$yt=round($yc-$rr*sin($a));
					$this->StrokeLabel($label,$img,$xc,$yc,$a,$r);
					if( $this->iShowGuideLineForSingle )
					$this->guideline->Stroke($img,$x,$y,$xt,$yt);
				}
				else {
					$this->guideline->Stroke($img,$x,$y,$xt,$yt);
					if( $q==1 || $q==2 ) {
						// Left side of Pie
						$this->guideline->Stroke($img,$xt,$yt,$xt-$this->guidelinemargin,$yt);
						$lbladj = -$this->guidelinemargin-5;
						$this->value->halign = "right";
						$this->value->valign = "center";
					}
					else {
						// Right side of pie
						$this->guideline->Stroke($img,$xt,$yt,$xt+$this->guidelinemargin,$yt);
						$lbladj = $this->guidelinemargin+5;
						$this->value->halign = "left";
						$this->value->valign = "center";
					}
					$this->value->Stroke($img,$label,$xt+$lbladj,$yt);
				}

				// Udate idx to point to next slice in the cluster to process
				$idx += $step;
			}
		}
	}

	function StrokeAllLabels($img,$xc,$yc,$radius) {
		// First normalize all angles for labels
		$n = count($this->la);
		for($i=0; $i < $n; ++$i) {
			$this->la[$i] = $this->NormAngle($this->la[$i]);
		}
		if( $this->guideline->iShow ) {
			$this->StrokeGuideLabels($img,$xc,$yc,$radius);
		}
		else {
			$n = count($this->labels);
			for($i=0; $i < $n; ++$i) {
				$this->StrokeLabel($this->labels[$i],$img,$xc,$yc,
				$this->la[$i],
				$radius + $this->explode_radius[$n-1-$i]);
			}
		}
	}

	// Position the labels of each slice
	function StrokeLabel($label,$img,$xc,$yc,$a,$r) {

		// Default value
		if( $this->ilabelposadj === 'auto' )
		$this->ilabelposadj = 0.65;

		// We position the values diferently depending on if they are inside
		// or outside the pie
		if( $this->ilabelposadj < 1.0 ) {

			$this->value->SetAlign('center','center');
			$this->value->margin = 0;

			$xt=round($this->ilabelposadj*$r*cos($a)+$xc);
			$yt=round($yc-$this->ilabelposadj*$r*sin($a));

			$this->value->Stroke($img,$label,$xt,$yt);
		}
		else {

			$this->value->halign = "left";
			$this->value->valign = "top";
			$this->value->margin = 0;

			// Position the axis title.
			// dx, dy is the offset from the top left corner of the bounding box that sorrounds the text
			// that intersects with the extension of the corresponding axis. The code looks a little
			// bit messy but this is really the only way of having a reasonable position of the
			// axis titles.
			$this->value->ApplyFont($img);
			$h=$img->GetTextHeight($label);
			// For numeric values the format of the display value
			// must be taken into account
			if( is_numeric($label) ) {
				if( $label > 0 )
				$w=$img->GetTextWidth(sprintf($this->value->format,$label));
				else
				$w=$img->GetTextWidth(sprintf($this->value->negformat,$label));
			}
			else
			$w=$img->GetTextWidth($label);

			if( $this->ilabelposadj > 1.0 && $this->ilabelposadj < 5.0) {
				$r *= $this->ilabelposadj;
			}

			$r += $img->GetFontHeight()/1.5;

			$xt=round($r*cos($a)+$xc);
			$yt=round($yc-$r*sin($a));

			// Normalize angle
			while( $a < 0 ) $a += 2*M_PI;
			while( $a > 2*M_PI ) $a -= 2*M_PI;

			if( $a>=7*M_PI/4 || $a <= M_PI/4 ) $dx=0;
			if( $a>=M_PI/4 && $a <= 3*M_PI/4 ) $dx=($a-M_PI/4)*2/M_PI;
			if( $a>=3*M_PI/4 && $a <= 5*M_PI/4 ) $dx=1;
			if( $a>=5*M_PI/4 && $a <= 7*M_PI/4 ) $dx=(1-($a-M_PI*5/4)*2/M_PI);

			if( $a>=7*M_PI/4 ) $dy=(($a-M_PI)-3*M_PI/4)*2/M_PI;
			if( $a<=M_PI/4 ) $dy=(1-$a*2/M_PI);
			if( $a>=M_PI/4 && $a <= 3*M_PI/4 ) $dy=1;
			if( $a>=3*M_PI/4 && $a <= 5*M_PI/4 ) $dy=(1-($a-3*M_PI/4)*2/M_PI);
			if( $a>=5*M_PI/4 && $a <= 7*M_PI/4 ) $dy=0;

			$this->value->Stroke($img,$label,$xt-$dx*$w,$yt-$dy*$h);
		}
	}

	function UsePlotThemeColors($flag = true) {
		$this->use_plot_theme_colors = $flag;
	}
} // Class


//===================================================
// CLASS PiePlotC
// Description: Same as a normal pie plot but with a
// filled circle in the center
//===================================================
class PiePlotC extends PiePlot {
	private $imidsize=0.5;  // Fraction of total width
	private $imidcolor='white';
	public $midtitle='';
	private $middlecsimtarget='',$middlecsimwintarget='',$middlecsimalt='';

	function __construct($data,$aCenterTitle='') {
		parent::__construct($data);
		$this->midtitle = new Text();
		$this->midtitle->ParagraphAlign('center');
	}

	function SetMid($aTitle,$aColor='white',$aSize=0.5) {
		$this->midtitle->Set($aTitle);

		$this->imidsize = $aSize ;
		$this->imidcolor = $aColor ;
	}

	function SetMidTitle($aTitle) {
		$this->midtitle->Set($aTitle);
	}

	function SetMidSize($aSize) {
		$this->imidsize = $aSize ;
	}

	function SetMidColor($aColor) {
		$this->imidcolor = $aColor ;
	}

	function SetMidCSIM($aTarget,$aAlt='',$aWinTarget='') {
		$this->middlecsimtarget = $aTarget;
		$this->middlecsimwintarget = $aWinTarget;
		$this->middlecsimalt = $aAlt;
	}

	function AddSliceToCSIM($i,$xc,$yc,$radius,$sa,$ea) {
		//Slice number, ellipse centre (x,y), radius, start angle, end angle
		while( $sa > 2*M_PI ) $sa = $sa - 2*M_PI;
		while( $ea > 2*M_PI ) $ea = $ea - 2*M_PI;

		$sa = 2*M_PI - $sa;
		$ea = 2*M_PI - $ea;

		// Special case when we have only one slice since then both start and end
		// angle will be == 0
		if( abs($sa - $ea) < 0.0001 ) {
			$sa=2*M_PI; $ea=0;
		}

		// Add inner circle first point
		$xp = floor(($this->imidsize*$radius*cos($ea))+$xc);
		$yp = floor($yc-($this->imidsize*$radius*sin($ea)));
		$coords = "$xp, $yp";

		//add coordinates every 0.25 radians
		$a=$ea+0.25;

		// If we cross the 360-limit with a slice we need to handle
		// the fact that end angle is smaller than start
		if( $sa < $ea ) {
			while ($a <= 2*M_PI) {
				$xp = floor($radius*cos($a)+$xc);
				$yp = floor($yc-$radius*sin($a));
				$coords.= ", $xp, $yp";
				$a += 0.25;
			}
			$a -= 2*M_PI;
		}

		while ($a < $sa) {
			$xp = floor(($this->imidsize*$radius*cos($a)+$xc));
			$yp = floor($yc-($this->imidsize*$radius*sin($a)));
			$coords.= ", $xp, $yp";
			$a += 0.25;
		}

		// Make sure we end at the last point
		$xp = floor(($this->imidsize*$radius*cos($sa)+$xc));
		$yp = floor($yc-($this->imidsize*$radius*sin($sa)));
		$coords.= ", $xp, $yp";

		// Straight line to outer circle
		$xp = floor($radius*cos($sa)+$xc);
		$yp = floor($yc-$radius*sin($sa));
		$coords.= ", $xp, $yp";

		//add coordinates every 0.25 radians
		$a=$sa - 0.25;
		while ($a > $ea) {
			$xp = floor($radius*cos($a)+$xc);
			$yp = floor($yc-$radius*sin($a));
			$coords.= ", $xp, $yp";
			$a -= 0.25;
		}

		//Add the last point on the arc
		$xp = floor($radius*cos($ea)+$xc);
		$yp = floor($yc-$radius*sin($ea));
		$coords.= ", $xp, $yp";

		// Close the arc
		$xp = floor(($this->imidsize*$radius*cos($ea))+$xc);
		$yp = floor($yc-($this->imidsize*$radius*sin($ea)));
		$coords .= ", $xp, $yp";

		if( !empty($this->csimtargets[$i]) ) {
			$this->csimareas .= "<area shape=\"poly\" coords=\"$coords\" href=\"".
			$this->csimtargets[$i]."\"";
			if( !empty($this->csimwintargets[$i]) ) {
				$this->csimareas .= " target=\"".$this->csimwintargets[$i]."\" ";
			}
			if( !empty($this->csimalts[$i]) ) {
				$tmp=sprintf($this->csimalts[$i],$this->data[$i]);
				$this->csimareas .= " title=\"$tmp\"  alt=\"$tmp\" ";
			}
			$this->csimareas .= " />\n";
		}
	}


	function Stroke($img,$aaoption=0) {

		// Stroke the pie but don't stroke values
		$tmp =  $this->value->show;
		$this->value->show = false;
		parent::Stroke($img,$aaoption);
		$this->value->show = $tmp;

		$xc = round($this->posx*$img->width);
		$yc = round($this->posy*$img->height);

		$radius = floor($this->radius * min($img->width,$img->height)) ;


		if( $this->imidsize > 0 && $aaoption !== 2 ) {

			if( $this->ishadowcolor != "" ) {
				$img->SetColor($this->ishadowcolor);
				$img->FilledCircle($xc+$this->ishadowdrop,$yc+$this->ishadowdrop,
				round($radius*$this->imidsize));
			}

			$img->SetColor($this->imidcolor);
			$img->FilledCircle($xc,$yc,round($radius*$this->imidsize));

			if(  $this->pie_border && $aaoption === 0 ) {
				$img->SetColor($this->color);
				$img->Circle($xc,$yc,round($radius*$this->imidsize));
			}

			if( !empty($this->middlecsimtarget) )
			$this->AddMiddleCSIM($xc,$yc,round($radius*$this->imidsize));

		}

		if( $this->value->show && $aaoption !== 1) {
			$this->StrokeAllLabels($img,$xc,$yc,$radius);
			$this->midtitle->SetPos($xc,$yc,'center','center');
			$this->midtitle->Stroke($img);
		}

	}

	function AddMiddleCSIM($xc,$yc,$r) {
		$xc=round($xc);$yc=round($yc);$r=round($r);
		$this->csimareas .= "<area shape=\"circle\" coords=\"$xc,$yc,$r\" href=\"".
		$this->middlecsimtarget."\"";
		if( !empty($this->middlecsimwintarget) ) {
			$this->csimareas .= " target=\"".$this->middlecsimwintarget."\"";
		}
		if( !empty($this->middlecsimalt) ) {
			$tmp = $this->middlecsimalt;
			$this->csimareas .= " title=\"$tmp\" alt=\"$tmp\" ";
		}
		$this->csimareas .= " />\n";
	}

	function StrokeLabel($label,$img,$xc,$yc,$a,$r) {

		if( $this->ilabelposadj === 'auto' )
		$this->ilabelposadj = (1-$this->imidsize)/2+$this->imidsize;

		parent::StrokeLabel($label,$img,$xc,$yc,$a,$r);

	}

}


//===================================================
// CLASS PieGraph
// Description:
//===================================================
class PieGraph extends Graph {
	private $posx, $posy, $radius;
	private $legends=array();
	public $plots=array();
	public $pieaa = false ;
	//---------------
	// CONSTRUCTOR
	function __construct($width=300,$height=200,$cachedName="",$timeout=0,$inline=1) {
		parent::__construct($width,$height,$cachedName,$timeout,$inline);
		$this->posx=$width/2;
		$this->posy=$height/2;
		$this->SetColor(array(255,255,255));

		if ($this->graph_theme) {
			$this->graph_theme->ApplyGraph($this);
		}
	}

	//---------------
	// PUBLIC METHODS
	function Add($aObj) {

		if( is_array($aObj) && count($aObj) > 0 )
		$cl = $aObj[0];
		else
		$cl = $aObj;

		if( $cl instanceof Text )
		$this->AddText($aObj);
		elseif( class_exists('IconPlot',false) && ($cl instanceof IconPlot) )
		$this->AddIcon($aObj);
		else {
			if( is_array($aObj) ) {
				$n = count($aObj);
				for($i=0; $i < $n; ++$i ) {
					//if ($aObj[$i]->theme) {
					//    $this->ClearTheme();
					//}
					$this->plots[] = $aObj[$i];
				}
			}
			else {
				//if ($aObj->theme) {
				//    $this->ClearTheme();
				//}
				$this->plots[] = $aObj;
			}
		}

		if ($this->graph_theme) {
			$this->graph_theme->SetupPlot($aObj);
			if ($aObj->is_using_plot_theme) {
				$aObj->UsePlotThemeColors();
			}
		}
	}

	function SetAntiAliasing($aFlg=true) {
		$this->pieaa = $aFlg;
	}

	function SetColor($c) {
		$this->SetMarginColor($c);
	}


	function DisplayCSIMAreas() {
		$csim="";
		foreach($this->plots as $p ) {
			$csim .= $p->GetCSIMareas();
		}

		$csim.= $this->legend->GetCSIMareas();
		if (preg_match_all("/area shape=\"(\w+)\" coords=\"([0-9\, ]+)\"/", $csim, $coords)) {
			$this->img->SetColor($this->csimcolor);
			$n = count($coords[0]);
			for ($i=0; $i < $n; $i++) {
				if ($coords[1][$i]=="poly") {
					preg_match_all('/\s*([0-9]+)\s*,\s*([0-9]+)\s*,*/',$coords[2][$i],$pts);
					$this->img->SetStartPoint($pts[1][count($pts[0])-1],$pts[2][count($pts[0])-1]);
					$m = count($pts[0]);
					for ($j=0; $j < $m; $j++) {
						$this->img->LineTo($pts[1][$j],$pts[2][$j]);
					}
				} else if ($coords[1][$i]=="rect") {
					$pts = preg_split('/,/', $coords[2][$i]);
					$this->img->SetStartPoint($pts[0],$pts[1]);
					$this->img->LineTo($pts[2],$pts[1]);
					$this->img->LineTo($pts[2],$pts[3]);
					$this->img->LineTo($pts[0],$pts[3]);
					$this->img->LineTo($pts[0],$pts[1]);

				}
			}
		}
	}

	// Method description
	function Stroke($aStrokeFileName="") {

		// If the filename is the predefined value = '_csim_special_'
		// we assume that the call to stroke only needs to do enough
		// to correctly generate the CSIM maps.
		// We use this variable to skip things we don't strictly need
		// to do to generate the image map to improve performance
		// a best we can. Therefor you will see a lot of tests !$_csim in the
		// code below.
		$_csim = ($aStrokeFileName===_CSIM_SPECIALFILE);

		// If we are called the second time (perhaps the user has called GetHTMLImageMap()
		// himself then the legends have alsready been populated once in order to get the
		// CSIM coordinats. Since we do not want the legends to be populated a second time
		// we clear the legends
		$this->legend->Clear();

		// We need to know if we have stroked the plot in the
		// GetCSIMareas. Otherwise the CSIM hasn't been generated
		// and in the case of GetCSIM called before stroke to generate
		// CSIM without storing an image to disk GetCSIM must call Stroke.
		$this->iHasStroked = true;

		$n = count($this->plots);

		if( $this->pieaa ) {

			if( !$_csim ) {
				if( $this->background_image != "" ) {
					$this->StrokeFrameBackground();
				}
				else {
					$this->StrokeFrame();
					$this->StrokeBackgroundGrad();
				}
			}


			$w = $this->img->width;
			$h = $this->img->height;
			$oldimg = $this->img->img;

			$this->img->CreateImgCanvas(2*$w,2*$h);

			$this->img->SetColor( $this->margin_color );
			$this->img->FilledRectangle(0,0,2*$w-1,2*$h-1);

			// Make all icons *2 i size since we will be scaling down the
			// imahe to do the anti aliasing
			$ni = count($this->iIcons);
			for($i=0; $i < $ni; ++$i) {
				$this->iIcons[$i]->iScale *= 2 ;
				if( $this->iIcons[$i]->iX > 1 )
				$this->iIcons[$i]->iX *= 2 ;
				if( $this->iIcons[$i]->iY > 1 )
				$this->iIcons[$i]->iY *= 2 ;
			}

			$this->StrokeIcons();

			for($i=0; $i < $n; ++$i) {
				if( $this->plots[$i]->posx > 1 )
				$this->plots[$i]->posx *= 2 ;
				if( $this->plots[$i]->posy > 1 )
				$this->plots[$i]->posy *= 2 ;

				$this->plots[$i]->Stroke($this->img,1);

				if( $this->plots[$i]->posx > 1 )
				$this->plots[$i]->posx /= 2 ;
				if( $this->plots[$i]->posy > 1 )
				$this->plots[$i]->posy /= 2 ;
			}

			$indent = $this->doframe ? ($this->frame_weight + ($this->doshadow ? $this->shadow_width : 0 )) : 0 ;
			$indent += $this->framebevel ? $this->framebeveldepth + 1 : 0 ;
			$this->img->CopyCanvasH($oldimg,$this->img->img,$indent,$indent,$indent,$indent,
			$w-2*$indent,$h-2*$indent,2*($w-$indent),2*($h-$indent));

			$this->img->img = $oldimg ;
			$this->img->width = $w ;
			$this->img->height = $h ;

			for($i=0; $i < $n; ++$i) {
				$this->plots[$i]->Stroke($this->img,2); // Stroke labels
				$this->plots[$i]->Legend($this);
			}

		}
		else {

			if( !$_csim ) {
				if( $this->background_image != "" ) {
					$this->StrokeFrameBackground();
				}
				else {
					$this->StrokeFrame();
					$this->StrokeBackgroundGrad();
				}
			}

			$this->StrokeIcons();

			for($i=0; $i < $n; ++$i) {
				$this->plots[$i]->Stroke($this->img);
				$this->plots[$i]->Legend($this);
			}
		}

		$this->legend->Stroke($this->img);
		$this->footer->Stroke($this->img);
		$this->StrokeTitles();

		if( !$_csim ) {

			// Stroke texts
			if( $this->texts != null ) {
				$n = count($this->texts);
				for($i=0; $i < $n; ++$i ) {
					$this->texts[$i]->Stroke($this->img);
				}
			}

			if( _JPG_DEBUG ) {
				$this->DisplayCSIMAreas();
			}

			// Should we do any final image transformation
			if( $this->iImgTrans ) {
				if( !class_exists('ImgTrans',false) ) {
					require_once('jpgraph_imgtrans.php');
					//JpGraphError::Raise('In order to use image transformation you must include the file jpgraph_imgtrans.php in your script.');
				}

				$tform = new ImgTrans($this->img->img);
				$this->img->img = $tform->Skew3D($this->iImgTransHorizon,$this->iImgTransSkewDist,
				$this->iImgTransDirection,$this->iImgTransHighQ,
				$this->iImgTransMinSize,$this->iImgTransFillColor,
				$this->iImgTransBorder);
			}


			// If the filename is given as the special "__handle"
			// then the image handler is returned and the image is NOT
			// streamed back
			if( $aStrokeFileName == _IMG_HANDLER ) {
				return $this->img->img;
			}
			else {
				// Finally stream the generated picture
				$this->cache->PutAndStream($this->img,$this->cache_name,$this->inline,
				$aStrokeFileName);
			}
		}
	}
} // Class

/* EOF */
?>
